| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Hemiaster texanus
Taxonomy
Hemiaster texanus was named by Roemer (1849).
Sister species lacking formal opinion data
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1849 | Hemiaster texanus Roemer |
| 1853 | Hemiaster americanus Giebel |
| 1915 | Hemiaster texanus Clark and Twitchell p. 94 |
| 1953 | Hemiaster texanus Cooke p. 33 figs. Pl 13, figs 1-4 |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
†Hemiaster texanus Roemer 1849
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Invalid names: Hemiaster americanus Giebel 1853 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order, c = class, p = phylum | |||||
| References: Aberhan 1992, Kiessling 2004 | |||||
Age range: base of the Santonian to the top of the Middle Campanian or 86.30000 to 70.60000 Ma
Collections (12 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Santonian | USA (Texas) | Hemiaster texanus (78107 197705 197706 197707) | |
| Early/Lower Campanian | USA (Texas) | Hemiaster texanus (78167 78202 197708 197709) | |
| Early/Lower Campanian - Middle Campanian | USA (Texas) | Hemiaster texanus (78187 197077 197710 197711) |